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Otrada [13]
3 years ago
15

The acoustic reflex protects the ear from intense sounds by:

Biology
1 answer:
Shkiper50 [21]3 years ago
7 0

Answer:

E. contraction of the stapedius and tensor tympani muscles.

The acoustic reflex protects the ear from intense sounds by <u>contraction of the stapedius and tensor tympani muscles.</u>

Explanation:

Although there are two middle ear muscles (tensor tympani and stapedius) in humans, only the stapedius muscle contracts in response to sound.

Contraction os stapedius causes a change in the axis of rotation of the stapes footplate, thus increasing the immitance of the middle ear system. This change in conductivity through the middle ear can be measured indirectly as changes in acoustic immitance. This reflex results in decreased sound transmission to trochlea.

Hence the answer is E. contraction of the stapedius and tensor tympani muscles.

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Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. I
Wewaii [24]

Answer:

D) The lac operon will function normally.

Explanation:

  • The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream.
  • The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.
  • so correct option is D) The lac operon will function normally.

4 0
3 years ago
PLS HELP I WILL GIVE BRAINLIEST FOR FIRST ANSWER!! Which of these structures relies on the circulatory system to transport the c
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Answer:

D. pituitary gland

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Cows cannot produce their own food. They consume grass in order to get energy for life processes. Cows are _______.
Andrew [12]

Answer:

B. heterotrophs

Explanation:

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3 0
3 years ago
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The graph pictured shows bacterial growth, in a petri dish, in which no additional resources are added over time.
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The graph pictured shows bacterial growth, in a petri dish, in which no additional resources are added over time, The graph pictured shows bacterial growth, in a petri dish, in which no additional resources are added over time.

<h3>How does the bacteria actually grow in the petri dish?</h3>

Sterile powdered agar with nutrients can be mixed with moisture, heated and then rushed into empty petri plates or ready-to-use dishes can be purchased.

The undigestible agar is a gelatin-like substance with a semi solid surface on which the bacteria can grow while they engulf the added nutrients

Thus, option "D" is correct.

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brainly.com/question/14461247

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all but last

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